| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 John de Mol | Crew | Creator | Creator | |
 Benji Madden | Cast | Actor | Benji Madden | 3 |
 Boy George | Cast | Actor | Self - Coach | 21 |
 Darren Hayes | Cast | Actor | Darren Hayes | 4 |
 Kelly Rowland | Cast | Actress | Self - Coach | 41 |
 Kylie Minogue | Cast | Actress | 23 | |
 Ricky Martin | Cast | Actor | Ricky Martin | 1 |
 Ronan Keating | Cast | Actor | Self | 5 |
 Seal | Cast | Actor | Self | 20 |
 Sonia Kruger | Cast | Actress | Self - Host | 73 |
 Adam Lambert | Cast | Actor | Adam Lambert | 1 |
 Ben Lee | Cast | Actor | Ben Lee | 4 |
 Delta Goodrem | Cast | Actress | Self - Coach | 61 |
 Faustina Agolley | Cast | Actress | Faustina Agolley | 5 |
 Guy Sebastian | Cast | Actor | Self - Coach | 51 |
 Jennifer Hudson | Cast | Actress | Jennifer Hudson | 2 |
 Jessica Origliasso | Cast | Actress | Jessica Origliasso | 1 |
 Keith Urban | Cast | Actor | Self - Coach | 12 |
 Lisa Origliasso | Cast | Actress | Lisa Origliasso | 1 |
 Noah Cyrus | Cast | Actress | Noah Cyrus | 1 |
 Ricki-Lee Coulter | Cast | Ricki-Lee Coulter | 4 | |
 Rita Ora | Cast | Actress | Self - Coach | 30 |
 Will.i.am | Cast | Actor | 23 | |
 Hailee Steinfeld | Cast | Actress | Hailee Steinfeld | 1 |
 Jessica Mauboy | Cast | Actress | Self - Coach | 30 |
 Joe Jonas | Cast | Actor | Self - Coach | 20 |
 Katy Perry | Cast | Actress | Katy Perry | 1 |
 Ryan Tedder | Cast | Actor | Ryan Tedder | 4 |
 Jason Derulo | Cast | Actor | Self - Coach | 18 |
 Jessie J | Cast | Actress | Self | 5 |
 Niall Horan | Cast | Actor | Niall Horan | 1 |
 Stan Walker | Cast | Stan Walker | 1 | |
 Aydan Calafiore | Cast | Actor | Aydan Calafiore | 1 |
 Rachael Leahcar | Cast | Actress | Herself | 6 |
Matt Hetherington | Cast | Matt Hetherington | 1 | |
 Joel Madden | Cast | Actor | Self | 5 |
 Megan Washington | Cast | Megan Washington | 3 | |
 Darren McMullen | Cast | Actor | Self - Host | 21 |
Mahalia Barnes | Cast | Mahalia Barnes | 2 | |
 Ben Bennett | Cast | Ben Bennett | 3 | |
 Anthony J. Sharpe | Cast | Actor | Anthony J. Sharpe | 2 |
 Emma Fitzgerald | Cast | Emma Fitzgerald | 1 | |
 Renee Bargh | Cast | Self - Host | 21 | |
Paula Parore | Cast | Paula Parore | 1 | |
Emma Louise Birdsall | Cast | Emma Louise Birdsall | 1 | |
Benjamin Hazlewood | Cast | Benjamin Hazlewood | 2 | |
Carmen Smith | Cast | Carmen Smith | 1 | |
Gail Page | Cast | Gail Page | 1 | |
Sam Ludeman | Cast | Sam Ludeman | 1 | |
Prinnie Stevens | Cast | Prinnie Stevens | 2 | |
Diana Rouvas | Cast | Diana Rouvas | 2 | |
Karise Eden | Cast | Karise Eden | 2 | |
Sarah De Bono | Cast | Sarah De Bono | 2 | |
Jimmy Cupples | Cast | Jimmy Cupples | 2 | |
Chris Sebastian | Cast | Chris Sebastian | 2 | |
Abbie Cardwell | Cast | Abbie Cardwell | 2 | |
Ellen Reed | Cast | Ellen Reed | 1 | |
 Mercy Cornwall | Cast | Actress | Mercy Cornwall | 1 |
Judah Kelly | Cast | Judah Kelly | 2 | |
Camryn Jordans | Cast | Camryn Jordans | 3 | |
Claire Howell | Cast | Claire Howell | 5 | |
Sam Trenwith | Cast | Sam Trenwith | 1 | |
Sally Skelton | Cast | Sally Skelton | 3 | |
Robin Johnson | Cast | Robin Johnson | 2 | |
Alfie Arcuri | Cast | Alfie Arcuri | 2 | |
Maddison McNamara | Cast | Maddison McNamara | 1 | |
Georgia Carey | Cast | Georgia Carey | 2 | |
| Person | Type | Job | Role(s) | Episodes |
